The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2021
Filed:
Sep. 18, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Norio Nakamura, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); H04N 9/31 (2006.01); G02B 27/09 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3152 (2013.01); G02B 27/0955 (2013.01); G02B 27/0977 (2013.01); G03B 21/204 (2013.01); G03B 21/2066 (2013.01);
Abstract
A wavelength conversion element according to the present disclosure includes a cemented body obtained by bonding a first wavelength conversion member which is excited by first light to emit second light having a wavelength band different from a wavelength band of the first light, and a first light guide member configured to transmit the first light and the second light, and a reflecting member which is disposed so as to be opposed to at least one surface parallel to a first direction out of a plurality of outer circumferential surfaces of the cemented body, and reflects at least one of the first light and the second light.